Home / 55,412.84-83,057.70-42,221.72

Finding the Fourth Proportional to 55,412.84, 83,057.70 and 42,221.72

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Solution

The fourth proportional to 55,412.84, 83,057.70 and 42,221.72 is: 63,285.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,412.84 : 83,057.70 = 42,221.72 : x
  2. Step 2: Convert to fraction form
    55,412.84/83,057.70 = 42,221.72/x
  3. Step 3: Cross multiply
    55,412.84x = 83,057.70 × 42,221.72
  4. Step 4: Simplify right side
    55,412.84x = 3,506,838,953.24
  5. Step 5: Solve for x
    x = 3,506,838,953.24/55,412.84
  6. Step 6: Final answer
    x = 63,285.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.